Based on 2547 and 353 real audits
| Metric | Google Tag Manager | jsDelivr CDN | Winner |
|---|---|---|---|
| Performance | 39 | 38 | Google Tag Manager |
| Accessibility | 87 | 88 | jsDelivr CDN |
| Best Practices | 86 | 86 | Tie |
| SEO | 90 | 91 | jsDelivr CDN |
| Security | 65 | 65 | Tie |
| TTFB | 375ms | 360ms | jsDelivr CDN |
| Composite | 73 | 73 | Tie |
jsDelivr CDN outperforms Google Tag Manager in 3 of 7 categories, with a stronger composite score (73 vs 73). Google Tag Manager leads in performance.
Choose Google Tag Manager when your primary concern is performance. Its audit data shows consistent strength in these areas across the sampled sites.
Choose jsDelivr CDN when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 2547 audited Google Tag Manager sites and 353 audited jsDelivr CDN sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
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